# Security update for the Linux Kernel

Announcement ID: SUSE-SU-2024:0129-1  
Rating: important  
References:

  * bsc#1179610
  * bsc#1183045
  * bsc#1193285
  * bsc#1211162
  * bsc#1211226
  * bsc#1212584
  * bsc#1214747
  * bsc#1214823
  * bsc#1215237
  * bsc#1215696
  * bsc#1215885
  * bsc#1216057
  * bsc#1216559
  * bsc#1216776
  * bsc#1217036
  * bsc#1217217
  * bsc#1217250
  * bsc#1217602
  * bsc#1217692
  * bsc#1217790
  * bsc#1217801
  * bsc#1217933
  * bsc#1217938
  * bsc#1217946
  * bsc#1217947
  * bsc#1217980
  * bsc#1217981
  * bsc#1217982
  * bsc#1218056
  * bsc#1218139
  * bsc#1218184
  * bsc#1218234
  * bsc#1218253
  * bsc#1218258
  * bsc#1218335
  * bsc#1218357
  * bsc#1218447
  * bsc#1218515
  * bsc#1218559
  * bsc#1218569
  * bsc#1218659
  * jsc#PED-3459
  * jsc#PED-5021
  * jsc#PED-7322

  
Cross-References:

  * CVE-2020-26555
  * CVE-2023-51779
  * CVE-2023-6121
  * CVE-2023-6531
  * CVE-2023-6546
  * CVE-2023-6606
  * CVE-2023-6610
  * CVE-2023-6622
  * CVE-2023-6931
  * CVE-2023-6932

  
CVSS scores:

  * CVE-2020-26555 ( SUSE ):  5.4 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
  * CVE-2020-26555 ( NVD ):  5.4 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
  * CVE-2023-51779 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-6121 ( SUSE ):  4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
  * CVE-2023-6121 ( NVD ):  4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
  * CVE-2023-6531 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-6546 ( SUSE ):  6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-6546 ( NVD ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-6606 ( SUSE ):  6.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
  * CVE-2023-6606 ( NVD ):  7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
  * CVE-2023-6610 ( SUSE ):  6.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
  * CVE-2023-6610 ( NVD ):  7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
  * CVE-2023-6622 ( SUSE ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2023-6622 ( NVD ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2023-6931 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-6931 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-6932 ( SUSE ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-6932 ( NVD ):  7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

  
Affected Products:

  * openSUSE Leap Micro 5.3
  * openSUSE Leap Micro 5.4
  * SUSE Linux Enterprise High Performance Computing 15 SP4
  * SUSE Linux Enterprise Live Patching 15-SP4
  * SUSE Linux Enterprise Micro 5.3
  * SUSE Linux Enterprise Micro 5.4
  * SUSE Linux Enterprise Micro for Rancher 5.3
  * SUSE Linux Enterprise Micro for Rancher 5.4
  * SUSE Linux Enterprise Real Time 15 SP4
  * SUSE Linux Enterprise Server 15 SP4
  * SUSE Linux Enterprise Server for SAP Applications 15 SP4
  * SUSE Real Time Module 15-SP4

  
  
An update that solves 10 vulnerabilities, contains three features and has 31
security fixes can now be installed.

## Description:

The SUSE Linux Enterprise 15 SP4 RT kernel was updated to receive various
security bugfixes.

The following security bugs were fixed:

  * CVE-2023-6531: Fixed a use-after-free flaw due to a race problem in the unix
    garbage collector's deletion of SKB races with unix_stream_read_generic() on
    the socket that the SKB is queued on (bsc#1218447).
  * CVE-2023-6610: Fixed an out of bounds read in the SMB client when printing
    debug information (bsc#1217946).
  * CVE-2023-51779: Fixed a use-after-free because of a bt_sock_ioctl race
    condition in bt_sock_recvmsg (bsc#1218559).
  * CVE-2020-26555: Fixed an issue during BR/EDR PIN code pairing in the
    Bluetooth subsystem that would allow replay attacks (bsc#1179610
    bsc#1215237).
  * CVE-2023-6606: Fixed an out of bounds read in the SMB client when receiving
    a malformed length from a server (bsc#1217947).
  * CVE-2023-6546: Fixed a race condition in the GSM 0710 tty multiplexor via
    the GSMIOC_SETCONF ioctl that could lead to local privilege escalation
    (bsc#1218335).
  * CVE-2023-6931: Fixed a heap out-of-bounds write vulnerability in the Linux
    kernel's Performance Events system component that could lead to local
    privilege escalation. (bsc#1218258).
  * CVE-2023-6932: Fixed a use-after-free vulnerability in the Linux kernel's
    ipv4: igmp component that could lead to local privilege escalation
    (bsc#1218253).
  * CVE-2023-6622: Fixed a null pointer dereference vulnerability in
    nft_dynset_init() that could allow a local attacker with CAP_NET_ADMIN user
    privilege to trigger a denial of service (bsc#1217938).
  * CVE-2023-6121: Fixed an information leak via dmesg when receiving a crafted
    packet in the NVMe-oF/TCP subsystem (bsc#1217250).

The following non-security bugs were fixed:

  * Reviewed and added more information to README.SUSE (jsc#PED-5021).
  * Build in the correct KOTD repository with multibuild (JSC-SLE#5501,
    boo#1211226, bsc#1218184) With multibuild setting repository flags is no
    longer supported for individual spec files - see
    https://github.com/openSUSE/open-build-service/issues/3574 Add ExclusiveArch
    conditional that depends on a macro set up by bs-upload-kernel instead. With
    that each package should build only in one repository - either standard or
    QA. Note: bs-upload-kernel does not interpret rpm conditionals, and only
    uses the first ExclusiveArch line to determine the architectures to enable.
  * KVM: s390/mm: Properly reset no-dat (bsc#1218056).
  * KVM: s390: vsie: fix wrong VIR 37 when MSO is used (bsc#1217933).
  * KVM: x86: Mask LVTPC when handling a PMI (jsc#PED-7322).
  * NFS: Fix O_DIRECT locking issues (bsc#1211162).
  * NFS: Fix a few more clear_bit() instances that need release semantics
    (bsc#1211162).
  * NFS: Fix a potential data corruption (bsc#1211162).
  * NFS: Fix a use after free in nfs_direct_join_group() (bsc#1211162).
  * NFS: Fix error handling for O_DIRECT write scheduling (bsc#1211162).
  * NFS: More O_DIRECT accounting fixes for error paths (bsc#1211162).
  * NFS: More fixes for nfs_direct_write_reschedule_io() (bsc#1211162).
  * NFS: Use the correct commit info in nfs_join_page_group() (bsc#1211162).
  * NLM: Defend against file_lock changes after vfs_test_lock() (bsc#1217692).
  * Updated SPI patches for NVIDIA Grace enablement (bsc#1212584, jsc#PED-3459).
  * block: fix revalidate performance regression (bsc#1216057).
  * bpf: Adjust insufficient default bpf_jit_limit (bsc#1218234).
  * ceph: fix incorrect revoked caps assert in ceph_fill_file_size()
    (bsc#1217980).
  * ceph: fix type promotion bug on 32bit systems (bsc#1217982).
  * clocksource: Add a Kconfig option for WATCHDOG_MAX_SKEW (bsc#1215885
    bsc#1217217).
  * clocksource: Enable TSC watchdog checking of HPET and PMTMR only when
    requested (bsc#1215885 bsc#1217217).
  * clocksource: Handle negative skews in "skew is too large" messages
    (bsc#1215885 bsc#1217217).
  * clocksource: Improve "skew is too large" messages (bsc#1215885 bsc#1217217).
  * clocksource: Improve read-back-delay message (bsc#1215885 bsc#1217217).
  * clocksource: Loosen clocksource watchdog constraints (bsc#1215885
    bsc#1217217).
  * clocksource: Print clocksource name when clocksource is tested unstable
    (bsc#1215885 bsc#1217217).
  * clocksource: Verify HPET and PMTMR when TSC unverified (bsc#1215885
    bsc#1217217).
  * dm_blk_ioctl: implement path failover for SG_IO (bsc#1183045, bsc#1216776).
  * fuse: dax: set fc->dax to NULL in fuse_dax_conn_free() (bsc#1218659).
  * kabi/severities: ignore kABI for asus-wmi drivers Tolerate the kABI changes,
    as used only locally for asus-wmi stuff
  * libceph: use kernel_connect() (bsc#1217981).
  * mkspec: Add multibuild support (JSC-SLE#5501, boo#1211226, bsc#1218184) When
    MULTIBUILD option in config.sh is enabled generate a _multibuild file
    listing all spec files.
  * mm: kmem: drop __GFP_NOFAIL when allocating objcg vectors (bsc#1218515).
  * net/smc: Fix pos miscalculation in statistics (bsc#1218139).
  * net/tg3: fix race condition in tg3_reset_task() (bsc#1217801).
  * nfs: only issue commit in DIO codepath if we have uncommitted data
    (bsc#1211162).
  * remove unnecessary WARN_ON_ONCE() (bsc#1214823 bsc#1218569).
  * s390/vx: fix save/restore of fpu kernel context (bsc#1218357).
  * scsi: lpfc: use unsigned type for num_sge (bsc#1214747).
  * swiotlb: fix a braino in the alignment check fix (bsc#1216559).
  * swiotlb: fix slot alignment checks (bsc#1216559).
  * tracing: Disable preemption when using the filter buffer (bsc#1217036).
  * tracing: Fix a possible race when disabling buffered events (bsc#1217036).
  * tracing: Fix a warning when allocating buffered events fails (bsc#1217036).
  * tracing: Fix incomplete locking when disabling buffered events
    (bsc#1217036).
  * tracing: Fix warning in trace_buffered_event_disable() (bsc#1217036).
  * tracing: Use __this_cpu_read() in trace_event_buffer_lock_reserver()
    (bsc#1217036).
  * uapi: propagate __struct_group() attributes to the container union
    (jsc#SLE-18978).
  * vsprintf/kallsyms: Prevent invalid data when printing symbol (bsc#1217602).
  * x86/entry/ia32: Ensure s32 is sign extended to s64 (bsc#1193285).
  * x86/platform/uv: Use alternate source for socket to node data (bsc#1215696
    bsc#1217790).
  * x86/tsc: Add option to force frequency recalibration with HW timer
    (bsc#1215885 bsc#1217217).
  * x86/tsc: Be consistent about use_tsc_delay() (bsc#1215885 bsc#1217217).
  * x86/tsc: Extend watchdog check exemption to 4-Sockets platform (bsc#1215885
    bsc#1217217).

## Special Instructions and Notes:

  * Please reboot the system after installing this update.

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * SUSE Real Time Module 15-SP4  
    zypper in -t patch SUSE-SLE-Module-RT-15-SP4-2024-129=1

  * openSUSE Leap Micro 5.3  
    zypper in -t patch openSUSE-Leap-Micro-5.3-2024-129=1

  * openSUSE Leap Micro 5.4  
    zypper in -t patch openSUSE-Leap-Micro-5.4-2024-129=1

  * SUSE Linux Enterprise Micro for Rancher 5.3  
    zypper in -t patch SUSE-SLE-Micro-5.3-2024-129=1

  * SUSE Linux Enterprise Micro 5.3  
    zypper in -t patch SUSE-SLE-Micro-5.3-2024-129=1

  * SUSE Linux Enterprise Micro for Rancher 5.4  
    zypper in -t patch SUSE-SLE-Micro-5.4-2024-129=1

  * SUSE Linux Enterprise Micro 5.4  
    zypper in -t patch SUSE-SLE-Micro-5.4-2024-129=1

  * SUSE Linux Enterprise Live Patching 15-SP4  
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2024-129=1

## Package List:

  * SUSE Real Time Module 15-SP4 (x86_64)
    * kernel-rt-devel-debuginfo-5.14.21-150400.15.65.1
    * kernel-rt-debuginfo-5.14.21-150400.15.65.1
    * kernel-rt_debug-debuginfo-5.14.21-150400.15.65.1
    * gfs2-kmp-rt-debuginfo-5.14.21-150400.15.65.1
    * kernel-rt_debug-devel-5.14.21-150400.15.65.1
    * cluster-md-kmp-rt-5.14.21-150400.15.65.1
    * dlm-kmp-rt-debuginfo-5.14.21-150400.15.65.1
    * kernel-rt-devel-5.14.21-150400.15.65.1
    * ocfs2-kmp-rt-debuginfo-5.14.21-150400.15.65.1
    * cluster-md-kmp-rt-debuginfo-5.14.21-150400.15.65.1
    * kernel-syms-rt-5.14.21-150400.15.65.1
    * ocfs2-kmp-rt-5.14.21-150400.15.65.1
    * dlm-kmp-rt-5.14.21-150400.15.65.1
    * kernel-rt_debug-debugsource-5.14.21-150400.15.65.1
    * kernel-rt_debug-devel-debuginfo-5.14.21-150400.15.65.1
    * kernel-rt-debugsource-5.14.21-150400.15.65.1
    * gfs2-kmp-rt-5.14.21-150400.15.65.1
  * SUSE Real Time Module 15-SP4 (noarch)
    * kernel-devel-rt-5.14.21-150400.15.65.1
    * kernel-source-rt-5.14.21-150400.15.65.1
  * SUSE Real Time Module 15-SP4 (nosrc x86_64)
    * kernel-rt_debug-5.14.21-150400.15.65.1
    * kernel-rt-5.14.21-150400.15.65.1
  * openSUSE Leap Micro 5.3 (nosrc x86_64)
    * kernel-rt-5.14.21-150400.15.65.1
  * openSUSE Leap Micro 5.3 (x86_64)
    * kernel-rt-debuginfo-5.14.21-150400.15.65.1
    * kernel-rt-debugsource-5.14.21-150400.15.65.1
  * openSUSE Leap Micro 5.4 (nosrc x86_64)
    * kernel-rt-5.14.21-150400.15.65.1
  * openSUSE Leap Micro 5.4 (x86_64)
    * kernel-rt-debuginfo-5.14.21-150400.15.65.1
    * kernel-rt-debugsource-5.14.21-150400.15.65.1
  * SUSE Linux Enterprise Micro for Rancher 5.3 (nosrc x86_64)
    * kernel-rt-5.14.21-150400.15.65.1
  * SUSE Linux Enterprise Micro for Rancher 5.3 (x86_64)
    * kernel-rt-debuginfo-5.14.21-150400.15.65.1
    * kernel-rt-debugsource-5.14.21-150400.15.65.1
  * SUSE Linux Enterprise Micro 5.3 (nosrc x86_64)
    * kernel-rt-5.14.21-150400.15.65.1
  * SUSE Linux Enterprise Micro 5.3 (x86_64)
    * kernel-rt-debuginfo-5.14.21-150400.15.65.1
    * kernel-rt-debugsource-5.14.21-150400.15.65.1
  * SUSE Linux Enterprise Micro for Rancher 5.4 (nosrc x86_64)
    * kernel-rt-5.14.21-150400.15.65.1
  * SUSE Linux Enterprise Micro for Rancher 5.4 (x86_64)
    * kernel-rt-debuginfo-5.14.21-150400.15.65.1
    * kernel-rt-debugsource-5.14.21-150400.15.65.1
  * SUSE Linux Enterprise Micro 5.4 (nosrc x86_64)
    * kernel-rt-5.14.21-150400.15.65.1
  * SUSE Linux Enterprise Micro 5.4 (x86_64)
    * kernel-rt-debuginfo-5.14.21-150400.15.65.1
    * kernel-rt-debugsource-5.14.21-150400.15.65.1
  * SUSE Linux Enterprise Live Patching 15-SP4 (x86_64)
    * kernel-livepatch-SLE15-SP4-RT_Update_17-debugsource-1-150400.1.3.1
    * kernel-livepatch-5_14_21-150400_15_65-rt-debuginfo-1-150400.1.3.1
    * kernel-livepatch-5_14_21-150400_15_65-rt-1-150400.1.3.1

## References:

  * https://www.suse.com/security/cve/CVE-2020-26555.html
  * https://www.suse.com/security/cve/CVE-2023-51779.html
  * https://www.suse.com/security/cve/CVE-2023-6121.html
  * https://www.suse.com/security/cve/CVE-2023-6531.html
  * https://www.suse.com/security/cve/CVE-2023-6546.html
  * https://www.suse.com/security/cve/CVE-2023-6606.html
  * https://www.suse.com/security/cve/CVE-2023-6610.html
  * https://www.suse.com/security/cve/CVE-2023-6622.html
  * https://www.suse.com/security/cve/CVE-2023-6931.html
  * https://www.suse.com/security/cve/CVE-2023-6932.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1179610
  * https://bugzilla.suse.com/show_bug.cgi?id=1183045
  * https://bugzilla.suse.com/show_bug.cgi?id=1193285
  * https://bugzilla.suse.com/show_bug.cgi?id=1211162
  * https://bugzilla.suse.com/show_bug.cgi?id=1211226
  * https://bugzilla.suse.com/show_bug.cgi?id=1212584
  * https://bugzilla.suse.com/show_bug.cgi?id=1214747
  * https://bugzilla.suse.com/show_bug.cgi?id=1214823
  * https://bugzilla.suse.com/show_bug.cgi?id=1215237
  * https://bugzilla.suse.com/show_bug.cgi?id=1215696
  * https://bugzilla.suse.com/show_bug.cgi?id=1215885
  * https://bugzilla.suse.com/show_bug.cgi?id=1216057
  * https://bugzilla.suse.com/show_bug.cgi?id=1216559
  * https://bugzilla.suse.com/show_bug.cgi?id=1216776
  * https://bugzilla.suse.com/show_bug.cgi?id=1217036
  * https://bugzilla.suse.com/show_bug.cgi?id=1217217
  * https://bugzilla.suse.com/show_bug.cgi?id=1217250
  * https://bugzilla.suse.com/show_bug.cgi?id=1217602
  * https://bugzilla.suse.com/show_bug.cgi?id=1217692
  * https://bugzilla.suse.com/show_bug.cgi?id=1217790
  * https://bugzilla.suse.com/show_bug.cgi?id=1217801
  * https://bugzilla.suse.com/show_bug.cgi?id=1217933
  * https://bugzilla.suse.com/show_bug.cgi?id=1217938
  * https://bugzilla.suse.com/show_bug.cgi?id=1217946
  * https://bugzilla.suse.com/show_bug.cgi?id=1217947
  * https://bugzilla.suse.com/show_bug.cgi?id=1217980
  * https://bugzilla.suse.com/show_bug.cgi?id=1217981
  * https://bugzilla.suse.com/show_bug.cgi?id=1217982
  * https://bugzilla.suse.com/show_bug.cgi?id=1218056
  * https://bugzilla.suse.com/show_bug.cgi?id=1218139
  * https://bugzilla.suse.com/show_bug.cgi?id=1218184
  * https://bugzilla.suse.com/show_bug.cgi?id=1218234
  * https://bugzilla.suse.com/show_bug.cgi?id=1218253
  * https://bugzilla.suse.com/show_bug.cgi?id=1218258
  * https://bugzilla.suse.com/show_bug.cgi?id=1218335
  * https://bugzilla.suse.com/show_bug.cgi?id=1218357
  * https://bugzilla.suse.com/show_bug.cgi?id=1218447
  * https://bugzilla.suse.com/show_bug.cgi?id=1218515
  * https://bugzilla.suse.com/show_bug.cgi?id=1218559
  * https://bugzilla.suse.com/show_bug.cgi?id=1218569
  * https://bugzilla.suse.com/show_bug.cgi?id=1218659
  * https://jira.suse.com/login.jsp
  * https://jira.suse.com/login.jsp
  * https://jira.suse.com/login.jsp